Packing case for chewing gum



FIG. 1 is a front-top-right side perspective view of a packing case for chewing gum showing my new design;

FIG. 2 is a front view thereof, the rear view being the same;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front cross-sectional view thereof. 

The ornamental design for packing case for chewing gum, as shown and described. 